The front parking sensors do NOT activate or beep automatically when you are near the wall, if you manually click the 360 Camera then it will start beeping, or if you engage reverse and the 360 camera shows automatically then it will start beeping, its weird, my Qashqai front sensors always used to beep when parking in my garage, but for MG HS PHEV I have to manually select 30 Camera when entering garage.
Another observation that I have, the parking sensors have accurate proximity distance sensing but the 360 camera shows the car bigger in size by about 6 inches on all sides, let me try to explain it, when I park in any parking spot, the top view of 360 camera shows that left & right sides of my car are about to touch the white parking lines while top view shows that front & rear sides of the car have already covered the front & rear parking lines but when you step out there is about 6 inches of actual space on all sides from what 360 shows, my Qashqai 360 was VERY accurate, infact you can precisely manoeuvre Qashqai based on what clearance the 360 was showing, but MG 360 is not accurate.